四川双河岩盐矿区钻探、物探综合研究

双河岩盐矿区的钻探工程发现,该区岩盐层厚度变化急剧,并且埋藏浅者厚度大,表明有沉积期后改造过程,或称“盐运动构造”。经大地电磁测深和高精度重力测量,进一步发现在岩盐层上方和下方各有一个“泥辟构造”存在。重力异常还显示出岩盐层厚度向两侧根快变薄、尖灭的特点。文章综合钻探、物探研究成果,对岩盐层富集区进行了圈定。

A SYNTHESIS STUDY OF DRILL AND GEOPHYSICAL OPERATIONS FOR THE SHUANGHE ROCK SALT MINING AREA

The drill operation has found that the thickness of the rock salt layer varies greatlyand that the shallower layer has greater thickness in the Shuanghe rock salt mining area. This indicates that there is a reworking process after deposition,or "salt moving structure". The data ofmagnetotelluric sounding and high resolution gravity survey reveal that there is a "mud diapirismstructure" on and beneath the rock salt layer.The gravity anomalies also reveal the feature thatthe thickness of the layer becomes thin and wedging out along its sides. Having synthesized theresults of drill and geophysicai operations,the authors outlined the areas rich in rock salt layers.